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    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
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    <div id="banner" class="first">
      <div class="imgBox">
        <img src="banner" class="banner" alt="首图" />
        <video
          src="bannerVid"
          muted=""
          class="bannerVid"
          autoplay=""
          loop=""
        ></video>
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      <button style="display: none" class="btnTemplate">
        <a href="#" target="_blank">
          <img src="" alt="" />
          <img src="" alt="" />
        </a>
      </button>
      <div class="btnBox">
        <button>
          <a href="#" target="_blank">
            <img src="btn1" alt="" />
            <img src="btn2" alt="" />
          </a>
        </button>
        <button>
          <a href="#" target="_blank">
            <img src="btn3" alt="" />
            <img src="btn4" alt="" />
          </a>
        </button>
        <button>
          <a href="#" target="_blank">
            <img src="btn5" alt="" />
            <img src="btn6" alt="" />
          </a>
        </button>
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